RE: MPLS OAM & the IETF

[Shahram Davari <Shahram_Davari@pmc-sierra.com>]

George,

I have to disagree with you here. I don't think defining a non-IP based OAM for MPLS is in-line with what you described as "redefining core functions".

-Shahram


> -----Original Message-----
> From: John Drake [mailto:jdrake@calient.net]
> Sent: Thursday, March 07, 2002 10:42 AM
> To: 'George Swallow'; Shahram Davari
> Cc: 'Scott Bradner'; ccamp@ops.ietf.org
> Subject: RE: MPLS OAM & the IETF 
> 
> 
> George,
> 
> A very sensible view.
> 
> Thanks,
> 
> John
> 
> -----Original Message-----
> From: George Swallow [mailto:swallow@cisco.com]
> Sent: Wednesday, March 06, 2002 9:26 AM
> To: Shahram Davari
> Cc: 'Scott Bradner'; ccamp@ops.ietf.org; swallow@cisco.com
> Subject: Re: MPLS OAM & the IETF 
> 
> 
> > Could you please clarify option (1) a bit more? If this route is
> > taken, still cooperation is needed between ITU and IETF. For example
> > ITU may need MPLS signaling extensions. Also in some cases packet
> > processing may need to be aligned between ITU and IETF in order to
> > avoid conflicts. For example ITU may consider an MPLS 
> path-trace that
> > uses TTL expiration, which requires a TTL expired MPLS packet to be
> > forwarded to MPLS OAM module, while GTTP considers sending MPLS TTL
> > expired packets to ICMP/GTTP module. There needs to be a 
> coordination
> > between IETF and ITU in order to find a common method which could
> > determine whether a packet should be forwarded to OAM or ICMP/GTTP
> > module.
> 
> It's precisely issues such as these that lead me to believe that it
> would be best if *only one* standards body owns a core technology.
> Certainly other bodies should be free to create applications, define
> extentions, and do implementation agreements.  But when it come to
> something a central as the basic forwarding plane, one group alone
> should handle it.
> 
> Allowing another body to redifine core functions WILL lead to
> interoperability problems.
> 
> ...George
> 
> ==================================================================
> George Swallow       Cisco Systems                  (978) 497-8143
>                      250 Apollo Drive
>                      Chelmsford, Ma 01824
>